Well-packer.



. PATENTE 0G18, 190,7. W. W. LEWIN.

WELL PACKER. 4 l PPLIUATION FILED APB.1,1907

WALTER W. LWIN, OF PARKERSBURG, WEST VIRGINIA. v

WELL-Pacman.

Specification of Letters Patent.v

Patented Oct. 8,' 1907.

Appiiottioii nea April 1,1907. serial No. 365,723.

To all whom it may concern.'

Be it known that I, WALTER W. LEWIN, a citizen oi the United States, residing at Parkersburg, in' the county of Wood and State of. West Virginia, have invented certain new and useful Improvements in Well-Packers, of which the following is a specification.

This invention relates to Well-tubing and packing, and especially to the class of such tubing and packing as are employed for packing well Walls, and as are distinguished from well-bottoni packers.

The object of the invention is to provide an improved apparatus of novel and peculiar construction and arrangement of parts for packing well-walls after the running of well-casing into the well.

,A further object of the invention is to provide a wellwall packer capable of such operation as to be removed from a well together with the casing Without leaving any part of the casing and the `packer in the well.

A still further object of the invention is to provide in a well-packer, aser-ies of serrated or toothed slides or segments independent of each other and movable vertically by spring pressure under them.

A still further object of the invention is to provide in `a well-packer curved slides or segments each of which is adapted to slide vertically and thereby position itself against the wall of the well independently, without regard to the centralness ofthe packer or the well-casing with respect to the well.

Various other objects, advantages and improved results are attainable in and by the construction and arrangement f parts, hereinafter particularly described and pointed out in the claims,

In the accompanying drawings forming part of this applicationz-Figure 1 is anl elevation of the well packer applied. Fig. 2 is a central vertical section showing the application of the packer to a well and well-casing. Fig; 3 is a similar viewshwing the position oi the parts for packing. Fig. 4 is a cross section taken on the plane indicated bythe dotted lines x-, Figs. 1 an'd'2. Fig. 5 is a detail perspective view of one of the toothed segments. Fig. 6 is an elevation of a modification. Fig. 7 is a vertical sectionof the modification.

The same reference numerals denote the same parts throughout the several views of the drawings.

The well-b ore 1 may be oi such depth as desired, and

of the usual si ze ior ordinary casings 2, casing couplings 3, and packing 4'.

The packer consists of a slip-collar 5, composed 'of tworings 6 and 6, connected together by vertical sections 7 integral with the rings and forming spaces 8; a

series of segments 9, and a series of spiral springs'lO, one

or more for each segment. lhe ring 6, has its bottom beveled from its outer to its-inner face to form a pointed bottom edge. The ring 6a has a series of holes 11, in each of which one of the springs 10 is seated. The segments 9 being of the same shape and construction only one of them will be described in detail; it has a beveled inner face provided with a cavity or notch 12,", the purpose of which will be hereinaiter described; spring seats 13, and a series of serrations or teeth 14 formed on its outer face to engage the wall of the well when rcleased irom breakable-bars 15, fitting the notches 12,

and having a central disk 1 6. The sides of the segments 9, have pins 9' working in slots 10, of the sections 7,

and such segment-sides are beveledto correspond withthe beveled sides oi the joining sections 7 of the rings 6 and 6. I

Referring to the modification shown in Figs. 6 and 7 a double packer is formed by duplicating the several parts, and interposing a ring 17 between the ringslS and 19. The ring 17 has a beveled outer face, and seats 20 for` springs 21. i

It will be seen that the packer is carried by the casing and rests on one of the casing-couplings, with the packing resting on the top ring oi the packer and under another casing-coupling, the segments being held down by the weight of the casing and against vertical movement by the breakable-bar, and when the packing reaches a desired depth, the said bar is broken, which releases the segments, and under pressure of the springs the segments are forced upwardly and outwardly intoengagement with the-well-wall, andhold the packing in such desired place to receive such force or pressure from the top as to expand it and fill the space between the casing and the well-wall.

It will be observed that the. action of the segments are independent of each other, and they are free to slide under pressure of the springs when released by the breakable-bar without moving any part or parts of the packer; v

may bea casing section or sections below and above the packer.

Having thus described my invention what I claim as new and desire to secure by Ietters Patent is:

1. A well Apacker comprising a pair of joined rings, int dependent segments sldably 'held between the rings, and means lfor sliding the sections upwardly and outwardly from the rings.

2. A well packer comprising rings joined together one above the other and having'spaces hetween them, independent segments slidable upwardly and outwardly throughsaid spaces, means for holding the segments against sliding, and nieans for sliding tle segments.

3. A well-packer comprising rings joined together so as to'leave spaces between( them, independent segments slid' ments, and spiral springs for sliding the' segments.

' 4. A We11`pncker comprising a series of rings joined togethei` vertically so as to leave spaces between the rings, certain ,of the rings having spring-seats and a beveled face, series of segments slidahle in said spaces independently one of the other, and a series of springs for sliding the segments.

5. In a well-packer, the combination, with the pnrkerrings, and the sections connectim,r the rings :md having.; slots therein, of the toothed segments working hriwoen the rings and having-pins which engage the .smid slots.

In testimony whereof l .fiflix xny signature in presence ol' 15 two witnesses.

WALTER \V. LEWIN. Witnesses:

.TOIIN D. HADDox, J. B. HICKMAN. 

